scripts: fix remote-gdb with CONFIG_BUILD_SUFFIX

Fix the scripts/remote-gdb script when CONFIG_BUILD_SUFFIX is set.
CONFIG_BUILD_SUFFIX extends the name of the folder build_dir/target*

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

scripts/remote-gdb

@@ -14,7 +14,7 @@ if( opendir SD, "$Bin/../staging_dir" )
 {
 	my ( $tid, $arch, $libc, @arches );
 
-	if( $ARGV[1] =~ m!\btarget-(.+?)_(([^/_]+libc|musl)[^/]+)\b!i )
+	if( $ARGV[1] =~ m!\btarget-(.+?)_(([^/_]+libc|musl)[^/_]+)\b!i )
 	{
 		print("Using target $1 ($2)\n");
 		($arch, $libc) = ($1, $2);
@@ -58,7 +58,7 @@ if( opendir SD, "$Bin/../staging_dir" )
 		my ( $fh, $fp ) = tempfile();
 
 		# Find sysroot
-		my ($sysroot) = glob("$Bin/../staging_dir/target-${arch}_${libc}/root-*/");
+		my ($sysroot) = glob("$Bin/../staging_dir/target-${arch}_${libc}*/root-*/");
 
 		print $fh "set sysroot $sysroot\n" if $sysroot;
 		my $cmd = "target extended-remote";